Turnbull, R. G. (1972). Evangelism now. Baker ..
Lua i Stíl Chicago (17ú heag.)Turnbull, Ralph G. Evangelism Now. Grand Rapids: Baker ., 1972.
Lua MLA (9ú heag.)Turnbull, Ralph G. Evangelism Now. Baker ., 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.